Herman a



(No Model.)

H. A. J. RIEGKERT.

SPRING HINGE.

No. 453,503. Patented June 2,1891.

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UNTTED STATES PATENT OFFICE.

HERMAN A. J. RIECKERT, OF NEW YORK, N. Y.

SPRING-HINGE.

SPECIFICATION forming part of Letters Patent No. 453,503, dated June 2,1891.

Application filed August 20, 1890. Serial No. 362,513. (No model.)

To all whom, it may concern:

- Be it known that I, HERMAN A.J.R1EGKERT, of the city, county, andState of New York, have invented a new and Improved Hinge, of which thefollowing is a full, clear, and exact description.

The invention relates to hinges such as shown and described in theapplication for Letters Patent of the United States, Serial No. 341,270,filed by me February 2l, 1890, and allowed May 1 1.890.

rlhe object of the present invention is to provide a new and improvedhinge, which is simpler and more durable in construction than the oneabove referred to and is very effective in operation.

The invent-ion consists in certain parts and details and combinations ofthe same, as will be described hereinafter, and then pointed out in theclaims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure l is a sectional side elevation of the improvement. Fig. 2 is asectional plan View of the same on the line no .r of Fig. l. Fig. 3 is atransverse section of the same on the line y y of Fig. 1, and Fig. 4: isa sectional plan View of the same on the line ,e of Fig.

The improved hinge is provided. with a suitably-constructed tube orcasing A, fitted into a suitable recessin the door and held in place bythe U-shaped side plate A and the bottom plate A2, screwed or otherwisefastened to the door. The upper end of the tube or casing A is closed bya nut B, against the under side of which presses one end of a spring C,held in the said tube or casing A and pressing on top of a cam D,provided on opposite sides with lugs E, fitting into suitable guidewaysF, formed in the casing A. The cam D is thus prevented from turning inthe casing A, but is free to slide vertically therein.

On the under side of the cam D at opposite sides are formed thecam-faces D', adapted to engage friction-rollers G, journaled in theupper end of a pivot or pintle ll, extending into the casing A for thelatter to turn thereon. The pintle or pivot H is provided with abaseil', fitted into a casing I, secured to the doorsill and carrying aplate J for locking the base Il', and consequently the pintle or pivotH, in place. The pintle or pivot H is provided within the casing A withan annular recess H2, into which fit friction-rollers K, mounted to turnloosely on studs L, project-ing from nuts N, screwing in the casing A,as is plainly shown in the drawings, so that the weight of the door istransmitted by the friction-rollers L to the pivot Il, thus relievingthe spring C, the cam D, and the friction-rollers G from the weight oft-he door. Then the door is closed, the hinge is in the normal positionshown in Fig. l-that is, the friction-rollers G are engaged by the upperparts of the cam-faces D. iVhen the door is opened, it swings on thepintle or pivot Il as a fulcrum, and the cam D, moving with the door,travels, with its cant face D', on the friction-rollers G, so that thesaid cam D is caused to slide upward, being guided by the lugs E and thebearings F, and compressing the spring C. The moment the door isreleased the spring C, pressing on the cam D, forces the latterdownward, so that the door is returned to its former normal closedposition. Then the door is given nearly a full quarter swing, the lowerhorizontal part of the cam D stands on top of the frictionrollers G,whereby the door is held in an open position, and is closed only whensuiiiciently moved to bring the lower end of the cam-faces D onto thefriction-rollers G. The spring C will then force the door shut, aspreviously described.

The cam-faces D', as shown in the drawings, are made double, so that thedoor an swing in either direction, the action of the spring and cambeing the same in both cases. It is understood that by this constructionof the hinge friction is reduced to a minimum.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a hinge, the combination, with a tube or casing andfrictioirrolleis held therein, of a pivot or pintle entering the saidcasing and provided with an annular groove engaged by the said frictionrollers, substantially as shown and described.

2. lu a hinge, the combination, with a cas- ICO ing, of spring held inthe said casing, a earn rollers held -on the said casing and engagingfitted to slide vertically in the said casing the annular groove ofthesaid pint le or pivot, lo and pressed 011 by the said spring, a xedsubstantially as shown and described.

piutle or pivot enterino the said Casin@ `and s 5 provided with ananrular groove, frbetion- HERMAN A' J' RIECKERT' rollers held on thesaid pintle or pivot and Vil'r/nesses: i adapted to be engaged by 'thecam-faces of THEO. G. HOSTER, the said cam, and a second set offriction- C. SEDGWIOK.

